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post #1211 of 1336
Already did the RT mod. Stock was 300K, I have it tuned to 100K so far. When I first did the mod I went to 40K and the card started generating heat like a toaster oven.

I look into the RIREF when I get back home tonight.
    
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post #1212 of 1336
maybe you are experiencing OVP.. and current is just fine.. Im really not sure, and from the datasheet I can tell nothing useful to issue at hand.

*my only thought was that input capacitance is limited with GPUv set that high..somehow causing insufficient current supply to vMEM circuit, triggering under voltage/under current... seems odd that it would shutdown IMC to. Maybe you are adjusting PLLv and not GPUv...
post #1213 of 1336
Mod point is connected to FB. It's even visibly traceable.

I didn't put any input caps on the card...maybe I should.

Then there's the alternate mod point posted in the essentials thread for the 275. I looked at the mod point, but was unable to trace directly to any pin.

Going to play with BIOS voltages tonight and see if that gets me anywhere.
    
CPUMotherboardGraphicsRAM
E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
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E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
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post #1214 of 1336
I've got a closet full of cards taking a beating in the single card category in dire need of a solder iron, first step down.

First mod:


Image of the voltage on the run, max'd at 1.51, AM3:


Work bench aftermath:



Aleslammer - MSI HD5450 (512) - *.* points AM3 | 1210/950 @ 1.51/1.61

I'd put points up but they won't mean much after the 5450 comp. Pencil mod on the ram, nothing to gain.

FtW nice runs all, I kept a AM3 back but no where close to yours.
Edited by Aleslammer - 6/27/10 at 2:05pm
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post #1215 of 1336
Revised cap placement on GTX480.. as well added Tantalum cap @ backside of core..should be easier to insulate and withstand the temps better [good to -80c].


post #1216 of 1336
I was just eyeballing some Tantalum caps on ebay yesterday.




Played with BIOS voltages. It did raise stock voltage .04v, but still tripping something ~1.33v. I got it up to 1.4v for just a sec and it tripped both the GPU and MEM controllers. So I think it is ADP4100(GPU IC) related. I think the GPU IC is hickuping a protection trip and coming back online, while the MEM ic trips and stays tripped until restart. Just my theory.

The ref 96GT used an ADP controller and they required a VID mod. I'm thinking this may be my next modding along with 16v caps.

opening PDF again.....


EDIT:

The IC is made to run up to 1.5v. Going to have to work the VID/resistor layout.
    
CPUMotherboardGraphicsRAM
E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
Hard DrivePowerCase
Seagate 250GB + 80GB WD for benching TT 875w, Corsair 650TX Custom bench station 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
Hard DrivePowerCase
Seagate 250GB + 80GB WD for benching TT 875w, Corsair 650TX Custom bench station 
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post #1217 of 1336
Aleslammer, try getting that card cooler. I was turning off the rigs & letting the AC cool the room as much as possible before benching to get those 1.3Ghz runs.
    
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post #1218 of 1336
Had my AC on about 18c in the room, but was stacking runs. My daughter has a portable room AC unit she used when their central unit went south, got three days home this weekend so might try ducting it, floor fan, strait at the card and see what happens.
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post #1219 of 1336
Quote:
Originally Posted by Aleslammer View Post
Had my AC on about 18c in the room, but was stacking runs. My daughter has a portable room AC unit she used when their central unit went south, got three days home this weekend so might try ducting it, floor fan, strait at the card and see what happens.
read quote in my sig
    
CPUMotherboardGraphicsRAM
E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
Hard DrivePowerCase
Seagate 250GB + 80GB WD for benching TT 875w, Corsair 650TX Custom bench station 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
Hard DrivePowerCase
Seagate 250GB + 80GB WD for benching TT 875w, Corsair 650TX Custom bench station 
  hide details  
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post #1220 of 1336
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